Table of Contents
What happens when soil creep occurs?
Soil creep, deterioration of the surface by the formation of soil pipes, erosion at the bottom of the slope, or minute slides destabilize the slope. Plant roots may stabilize the slope. Soil fallen from the upper slope accumulates on some valley slopes, but the slopes do not slide.
How do slumps occur?
A slump is a form of mass wasting that occurs when a coherent mass of loosely consolidated materials or a rock layer moves a short distance down a slope. Movement is characterized by sliding along a concave-upward or planar surface. Translational slumps occur when a detached landmass moves along a planar surface.
What factors facilitate creep?
Creep can be facilitated by freezing and thawing because, as shown in Figure 15.12, particles are lifted perpendicular to the surface by the growth of ice crystals within the soil, and then let down vertically by gravity when the ice melts. The same effect can be produced by frequent wetting and drying of the soil.
Which process contributes to the development of soil creep?
Creep- occurs relatively gentle slopes, usually aided by water by soil. Colder climates- repeated thawing and freezing of water within the soil contributes to creep. Landslides- more rapid mass wasting of rock, soil, or both,. Flows- earthflows, debris flow, mudflows, and debris avalanche.
What are the signs of creep?
13 Ways to Spot a Creep and What It Says About Your Judgment, According to Science
- Stands too close to you/others.
- Has greasy or unkempt hair.
- Has a peculiar smile.
- Has bulging eyes.
- Has long fingers.
- Has very pale skin.
- Has bags under his or her eyes.
- Wears dirty clothes or dresses oddly.
How do you identify soil creep?
Progressive, where slopes are reaching the point of failure as other types of mass movements. Creep is indicated by curved tree trunks, bent fences or retaining walls, tilted poles or fences, and small soil ripples or ridges.
How can slumps be prevented?
Engineering solutions include barriers and retaining walls, drainage pipes, terracing the slope to reduce the steepness of the cuts, and immediate revegetation. Rockfalls can be controlled or eliminated by the use of rock bolts, cables, and screens and by cutting back slopes to lesser gradients.
Where are slumps found?
Slump is common where clay-rich materials are exposed along a steep slope. Such oversteepend slopes naturally occur on the outside of meanders along the Red River. Slump is typically identified as the downward movement of a block of earth material along some curved surface of failure.
Which of the following is evidence of creep?
Trees with curved trunks are often signs that the hillside is slowly creeping downhill. Creep is the imperceptibly slow, steady, downward movement of slope-forming soil or rock. Creep is indicated by curved tree trunks, bent fences or retaining walls, tilted poles or fences, and small soil ripples or ridges.
What is the most common mass wasting trigger?
Increased water content
Increased water content within the slope is the most common mass-wasting trigger. Water content can increase due to rapidly melting snow or ice or an intense rain event.
What are signs of soil creep?
Creep is indicated by curved tree trunks, bent fences or retaining walls, tilted poles or fences, and small soil ripples or ridges.
Which is the slowest of the mass wasting processes?
Creep Soil creep
Creep. Soil creep is a slow and long term mass movement.
What does the term creep mean in geology?
Written By: Creep, in geology, slow downslope movement of particles that occurs on every slope covered with loose, weathered material. Even soil covered with close-knit sod creeps downslope, as indicated by slow but persistent tilting of trees, poles, gravestones, and other objects set into the ground on hillsides.
Why does creep take so long to happen?
Creep takes a long time because each particle might only move a millimetre to a few centimetres at a time. Click to view larger and see the legend. This diagram shows how a single particle gradually moves down the slope. It moves a little further with each cycle of swelling (blue arrow) and shrinking (black arrow).
How do animals speed up the creep process?
The process is sped up by animals walking along the tops of the terracettes. When sediment expands, individual particles are lifted up at right angles to the slope. Sediments can expand when they freeze, get wet or are heated up in the sun. When the sediments shrink, the particles fall straight back down.
When does scope creep occur in a project?
The longer the project, the greater the chance for scope creep to occur. Project sponsors have more time to compare strategies. Clients can change their minds. Business markets can present new requirements. Project team members can discover new information or methods.